Method of forming receptacles



June 1, 1937. R. L.-BUSSEY METHOD OF FORMING RECEPTACLES Original FiledMay 22, 1934 4 Sheets-Sheet 1 v fzwemor June 1, 1937. R EY 2,082,323

METHOD OF FORMING RECEPTACLES Original Filed May 22, 1934 4 Sheets-Sheet2 June 1, 1937. R..L. BUSSEY 2,082,323

7 METHOD OF FORMING RECEPTACLES Original Filed May'22, 1934 v 4 SheetSheet 3 June 1, 1937. R. L. BUSSEY METHOD OF .FORMING RECEPTACLES' 4Sheets-Sheet 4 Original Filed May 22, 1934 Patented June 1, 1937 UNITEDSTATES PATENT OFFICE Coating Machinery Corporation, New

York,

N. Y., a corporation of New York Application May 22, 1934, Serial No.726,936 Renewed November 3, 1636 12 Claims.

This invention relates to a method of forming paper receptacles, such asdisclosed in a companion'application filed by me December 2, 1933,

y the serial number of which is 700,666, the recep- 5 tacle consistingof a body made from a-blank shaped to tubular form and secured at thelongitudinal marginal portions, with a bottom closure secured in one endand the filler opening at the opposite end.

It is an object of the invention to provide an improved receptacle ofthis character, an im proved constructed and arranged blank from whichto make the receptacle body, and improved method of and means for makingthe receptacle,

and an improved method and means for securing the filler end incollapsed and closed condition.

It is another object of the invention to provide an improved paperreceptacle impervious to the action of greases and oil, particularlyhydrocarbon or mineral oils, and having the properties of being alcoholand acid resisting, and towntain and dispense the same therein, andexternally impervious to the action of water and moisture.

It is a further object of the invention to provide an improved materialfor making receptacles, consisting of a sheet or web of paper having aflexible coating on one surface and impregnated therewith of a flexiblematerial having the properties of being impervious to the action ofgrease and oil, and alcohol and acid resisting.

A further object of the invention consists in providing a paperreceptacle wherein the comnponent parts are secured by a flexibleadhesive having the properties of being greaseand oil proof and alcoholand acid resisting and normally non-tacky and adapted to be renderedtacky when subjected to an elevated temperature.

40 Other objects and advantages will hereinafter appear.

In the drawings accompanying and forming a part of this application,Figure .1 is a perspective view of my improved receptacle showing thesame with the filler end in closed condition, and partly broken away toshowthe methodof securing a bottom closure in the receptacle body.

Figure 2 is a perspective view ofthe receptacle showing the filleropening in open condition.

Figure 3 is a perspective view of the filler opening end of thereceptacle and showing the filler opening secured in. clo:ed conditions.

Figure 4 is a perspective view of one end of the receptacle body .andclosure member therefor,

showing the same in dissembled relation.

means to adhesively unite the blank at th scale, of the material of theblank shown in Figure 8.

Figure 10 is a side elevation 011a mandrel with a blank wrapped aroundthe same to show the manner of forming the receptacle body. 15

Figure his a cross sectional view of the mandrel around which the blankis wrapped, in forming the receptacle body and showing the means to wrapthe blank around the mandrel and the e margi- 20 nal portions upon themandrel.

Figure 12 is a sectional view showing the man ner of cutting a closuredisk from a web, periph erally flanging and engaging the same in the endof a receptacle body. 25 Figure 13 is a sectional view ofmeans forfolding the end of the receptacle body over the clo sure flange insecuring the closure in the receptacle body. a a a Figure 14 is a sideelevation of a receptacle con- 3 structed from the blank shown inFigures 7 and'8 relative to means to close the filler opening bysqueezing together the opposite wall portions, showing the same innormal position in full lines, and in dot and dash lines the open andcollapsed 35 end in closed condition.

Figure 15 is an elevational view of the upper end of the receptacleshowing the same relative to the closing means and in closed condition,and means to fold a portion of the receptacle ex- 40 tended beyond theopposite wall portion of the receptacle over the closed endof thereceptacle.

Figure 16 is a. view similar to Figure 15, but showing the extended endof the receptacle foldedover the opposite receptacle portion and show-45 ing the means to apply heat and pressure to said folded end to securethe receptacle opening'in closed condition; and 1 Figure 1'7 is aperspective view, dissembled, of the means for folding the extended endof the re- 50 ceptacle and securing it in folded condition.

Figure 18 is a perspective .view of a modified form -of. the mandrelwith the blank wrapped around the same, with one end of the blank foldedto a collapsed position, and the closing) flaps of the blank in positionto be folded over, and the means to fold the same, and the means toadhesively unite the folded flap.

Figure 19 is an end view of the mandrel around which the blank iswrapped in forming the body, and showing the means to wrap the blankaround the mandrel and the means to adhesively unite the blank at themarginal portions.

Figure 20 is a plan view of the flap folding means shown in Figure 18showing in full lines the open position thereof and the closed positionin broken lines, also showing the means for adhesively uniting the flap.

Figure 21 is a sectional view showing the manner of cutting a closuredisk from a web, peripherally flanging and engaging the same in the endof a receptacle.

Figure 22 is a sectional view of means for folding the end of thereceptacle body over the closure flange in securing the closure in thereceptacle body.

Figure 23 is a view of the receptacle body and showing the flanged capinserted flush with the receptacle end, and adhesively united without.

stitute the base of the receptacle or container,

of arcuateor curved form, as at It. The opposite .sides 20, 2| convergeat the same angle from the base end to the opposite end of the blank,the edge of the blank opposite the base end having three straight lineportions a, b, and c inclining at the same and an acute angle to thehorizontal. The portions a, b are arranged and dimensioned so that whenthe upper open end of the receptacle formed from the blank is collapsedsaid portions will extend substantially in an even horizontal plane andconstitute substantially one side of the collapsed receptacle end withthe portion b arranged in a plane above the portion a for a purpose tobe hereinafter described. The portion 0 is of an extent substantiallyequal to the marginal portion of the side 2| of the blank to be lappedover the marginal portion of the side 2| in securing the blank at saidmarginal portions in forming the receptacle body. In forming areceptacle from the blank shown in Figure '7, the marginal portion ofthe base end, the side 2| and end portion b are provided with anadhesive surface, as indicated at l8, 2|, and b. This adhesive comprisesa flexible gelatine or gluten, such as a cereal derivative, which isimpervious to grease and oil, particularly hydrocarbon or mineral oiland grease, and having the properties of being alcohol and acidresisting, and the same being solidified and rendered substantiallynon-tacky at ordinaryroom temperature and adapted to be rendered tackywhen subjected to an elevated temperature. The adhesive may be appliedto the blank and be in a dry and substantially non-tacky conditionpreparatory to forming the receptacle body, or the same may be appliedto the blank in a soluble and tacky condition just prior to forming thereceptacle body.

To form the receptacle or container body, the blank is wrapped aroundthe mandrel 22 (Figform to the mandrel pivotally carried by arms 26, 21reciprocatory in a direction transversely of and at opposite sides ofthe mandrel in a manner which is usual in the art. In case the adhesiveapplied to the blank is in a tacky condition, pressure is applied to theoverlapped portions of the blank which may be eflected in any suitablemanner and accomplished by a pressure member 28 carried by the flap-25forcibly applied to the overlapped portions of the blank, as by a leverarm 29 pivotally connected to an ear' extended from said flap, as at 30.Should the adhesive be in a dry and non-tacky condition, heat is appliedto the overlapped portions of the blank simultaneously with thepressure, eifected by heating the presser 28 as by arranging an electricheating element therein, as shown at '3l.

After the receptacle body is formed, it is removed from the mandrel andengaged in a holder 32, (Figures 12 and 13) shaped to conform to thereceptacle body and of alength so that a portion of the end of largerdiameter will project from the holder, as shown at 33, and the holderpositioned in register with means to cut a disk from a web W,peripherally flange the disk and engage the flanged disk in successivesequence with the hanging operation into the end 33 of the receptaclebody projecting from the holder 32. This means comprises a tubular punch34 mounted on a reciprocatory carrier 35 and a die plate 36 having anopening therethrough with two diameters 31, 38, the punch cooperatingwith the portion of larger diameter 21 to cut a disk from the web W anda head 39 carried by a plunger 40 reciprocatory in the punch carrier 35cooperating with the portion 38 of lesser diameter in the die plate toperipherally flange the disk by forcing the disk through said portion ofthe die opening of smaller diameter, the continued movement of theflanginghead engaging the peripherally flanged disk in the end of the.receptacle body in the holder, as clearly shown the receptacle body,the holder is positioned in register with means to turn in the extendedend of the receptacle body over and into engagement with the diskflange, when it is subjected to heat and pressure to render the adhesiveI8 tacky and effect an intimate uniting of adjacent or contactingsurfaces and of the receptacle body with the disk flange. This means, asshown in Figure 13, consists of a tubular member 42 reciprocatory towardand away from the end of the holder and having an internal diameter lessthan the diameter of the projecting end of the receptacle body with theend wall 43 converged inward, and as said member is moved to the holder,said beveled end wall 43 will engage the projecting end of thereceptacle body and deflect it inward, as shown at 44. A head 45carrying a heater, shown as an electric heating unit 46, and actuated bya tubular plunger 41 is slidably mounted a clamping force thereon. Toproduce an ele-.

in the member 42 and reoiprocatory toward and away from the holder 32.The peripheral portion of the heater is slightly flared outward, as at48, andas'the head is moved to the holder 32, said flared peripheralportion will engage the inwardly defiected'end 44 of the receptacle bodyand direct- .it inwardly to the inside of the disk flange, as shown at49, the external diameter of the heater being such as to ating therefromrendering the adhesive and causing an intimate uniting of the turned inreceptacle end with the disk flange.

' After the closure disk C has been secured in the receptacle body, thereceptacle is complete and is of a structure, as shown in Figure 2, withthe edge portion b having the adhesive surface b at the mouth or openend extending beyond .the edge a of the opposite wall portion. In thiscondition, the receptacle may be filled with the contents to bedispensed therein. To close and seal the filler opening of thereceptacle, the opposite wall portions a, b at the opening are collapsedby squeezing them together, preferably so that the longitudinal edge 20of the receptacle blank .at the open end will be at one side of thereceptacle, as shown in Figure l, with the adhesive surfaced portion b"extending beyond the edge a, the adhesive being substantially dry andnontacky. To seal the collapsed receptacle end, the extended end b isfolded over the edge a and subjected to heat and pressure to render theadhesive tacky and efiect an intimate uniting of the adhesive surfacedportion 12' with the receptacle.

To close -the receptacle end, the receptacle is positioned upon the headof a vertical reciprocatory plunger 50 and positioned thereby between apair of members 5|, 52, which may be in the form of slides, movabletoward and away from each other and normally assuming a spread positionto permit the engaging of the end of the receptacle between the same, asshown in Figure 14. As the-members 5| 52 are moved toward each other, asshown in dotted lines, the open end of the receptacle will be collapsedand assume substantially the lines. I a

The means to foldthe adhesive surfaced end and secure it in foldedcondition, is positioned directly above the collapsing members 5|, 52and comprises a pair of pivoted jaws 53, 54, each jaw provided withknuckles 55, 56, whereby the jaws are mounted upon a pintle 51 with theknuckles in interengaged relation with the knuckles 55 fixed to thepintle, as by a pin, and the knuckles 56 loose thereon, the extended endof the pintle having a crank arm 58 fixed thereto and the end knuckle 56of the jaw 54 having a crank arm 59 integral with the knuckle or fixedthereto. The jawsf are normally positioned contiguous to each other andat one side of the projecting end b of the collapsed receptacle end, asshown in Figure 15, and to fold the end b over the closed receptacle endthe jaw 53 is moved to the dotted line position, shown in said Figure15, thereby moving said extended end b to extend substantially at aright angle to the .,l'aw 54, when vertical movement is imparted to theplunger tacle between the jaws, thus effecting a folding of the extendedend b to the opposite side of the receptacle .when the jaws are actuatedto exert heating unit 50 firmly engage the turned. in-

- 10 receptacle end with the disk flange, the heat radil8 tacky positionshown in dot and dash over the open end of the collapsed receptaclefolded body and v and the overlapped portion end of the receptacle. Inthis position of the jaw 53, it will be spaced from the 50 to engage theend of the recep-.

vated'temperature to render the adhesive b tacky and effect an intimateuniting of the projecting, flap portion b with the receptacle, one orboth of the Jaws is heated, shown in theinstance as the Jaw 53, byarranging an electric thereon. After the extended flap portion b hasbeen adhesively united in folded condition with the receptacle, the jaws53, 54 are actuated to move them out of engagement with the receptacle,the collapsing members 5!, 52 being moved away from each other releasingthe receptacle when the plunger 50 is actuated to move the closedreceptacle from between the qgllapsing members.

While I have described my receptacleand method of forming the same,whereby the receptacle is open at the smaller end to be the fillingopening of the receptacle which is thereafter collapsed and sealed atthis end after the filling thereof, I may elect to directly form thebody in the collapsed form and at the same time close and seal this end,and fill the receptacle from the large or opposite end, and insert thecap C as the finishing operation which may bedone in proper sequence,that is when the fillingmechanism is a part of the receptacle formingmeans, or the cap maybe inserted by a separate means or manually anytime after the-forming thereof.

It has been found in practice to be a decided advantage in the pouringor depositing of various substances into the receptacle to fill the samefrom this larger end, both in the handling of the receptacle whenfilling manually or when filling automatically which materiallysimplifies the means for forming the receptacle. I accomplish this, asshown in the modified form of this method, see Figures 18-to 22, ofwhich Figure 18 shows the mandrel 22a conforming in shape to fit theinterior of the collapsed body, on which the blank B in every respectthe same blank as described, is formed, except here the closing flap isturned in and sealed to close the receptacle at this end, before thefolded body is removed from the mandrel, the mandrelis flattened onopposite sides and comes to edge 22b, terminating short of theoverhanging blank, see Figure 18. To thus form the receptacle body, theblank B is wrapped around the mandrel as before, the mandrel beingmounted to move forward to forming position, andwithdrawn by areciprocating action; as shown the mandrel is forward, and the blagkfirst being clamped by the bar 23a, the sides 20 nd 2! of the 25a,shaped here blank folded up by flaps 24a, to fit the circular end of,the the wedge shape or collapsed end which is folded to bring theoppositewalls together and held under tension by these folding flaps,the overlapped portions blank are forced down by areciprocating presserbar 28a to have movement toward and away from the mandrel to applypressure, and carrying a heating unit 2817 by which the lapped portionsare intimately united. These flaps are pivotally carried. by arms 26a,21a reciprocatory in a direction transversely of opposite sides of themandrel,

pressed down and pressure applied by bar 28a, slidably located above themandrel to'move into and out of engagement therewith, this'bar havingthe heating unit 28b to render the adhesive tacky to the overlappedportion.

Before removal of the blank body fromthe mandrel, the extended end bis-folded over on the. body by a folding and clamping means located 20and'2i of the of the .blank being by forcing the disk erally flanged infront of the mandrel. This means folds the adhesive surfaced end I) overthe closed folded end of the body and is secured in this-foldedcondition, by a pair of pivoted jaws 53a, 540., each jaw provided withears jaws are loosely mounted the ears intereng aged similar to a hinge,each jaw has a perforated email, 590 for connection of actuating levers58b, 5917, by which the jaws are operated. The jaws are normally open asindicated in full lines in Figure 20, onejaw as 5311 is first rockedinward to engage the ended end b of the blank and by a shoulderedportion H! of the jaw folds the end I) to the position shown in brokenlines, to a greater angle than right angle to the full line position,this being done by spring members 'Il, carried by this jaw, so locatedin slotted portions I2 of the jaw to yield inward of the slots on thefirst engagement of the flap 1) and move outward to fold the same to theangle shown, whereupon the jaw 54a is upon a stud 51a with rocked toengage the partially folded flap to close the same against the body ofthe receptacle. Each jaw has a clamping portion I3, 14, that is broughtfirmly against the flap and body on opposite sides, thus effecting afolding of the extended end 17 of the receptacle. Toproduce an elevatedtemperature to render the adhesive b tacky and effect an intimateuniting of the projecting flap, portion b with-the receptacle, one orboth of the jaws is heated, as shown in the present instance, each jawhas an electric heating unit 15 thereon to render the adhesive tacky.After the extended flap b has been adhesively united in folded conditionwith the receptacle, the jaws 53a, 54a, are actuated to ment with thereceptacle and the mandrel is withdrawn, releasing the receptacle to becarried in a holder 32a shaped to conform to the receptacle body and ofa length so that a portion of the end of circular form will project fromthe holder as at 33a, to the filling mechanism, not shown. Thereceptacle is then shifted to a closing and sealing position, see Figure21, to register with means to cut a disk from a web W, peripherallyflange the disk and engage the flanged disk in'successive sequence withthe flanging operation into the end 330 of the receptaclebody,projecting from the holder 3211. This means 'comprises a tubular punch34a mounted on a reciprocatory carrier 35aand a disk plate 3611. havingan opening therethrough with two diameters 31a, 380, the punchcooperating with the portion of larger diameter 310 to cut a disk fromthe web and a head "a carried by a plunger 40a. reciprocatory in thepunch carrier 35:; cooperating with the portion 38a of lesser diameterin the disk plateto peripherally flange the disk through said portion ofthe disk opening of smaller diameter, the continued movement of flanginghead engaging the periphdisk in the end of the receptacle body in theholder, as shown in Figure 21, with theadhesively surfaced portion ofthe end of the of the receptacle body receptacle body extending beyondthe disk flange.

After the closure disk C has been engaged in the receptacle body,.theholder is positioned in register with means to turn in the extended end55a, 56w whereby the move them out of en age-- in connection withFigures sure cap C is formed over and into engagement tended portion bof one body with the disk flange.

. time after the away from the end of the holder and having an internaldiameter less than the diameter of the projecting end of the receptaclebody with the end wall 43a converged inward, and as said member is movedto the holder, said beveled end wall 43a will engage the projecting endof the receptacle body and'deflect it inward, as shown at a. A head 45acarrying a heater, shown as an electric heating unit 46a, and actuatedby a tubular plunger 41a, that is slidably mounted in the member 42a andreciprocatory toward and away fromthe holder, the end of the receptacle.

having been deflected, as stated, the tubular member 42a comesto restand the plunger "a continues in its movement toward the holder to engagethe deflected end portion 'of the receptacle, the plunger "a has anextending annular portion 48a, the edge of which is curved inwardly toengage the deflected portion of the body that is turned inward and overthe flanged portion of the cap C previously inserted, as clearly shownin broken lines at 19a. The diameter of the plunger being such tomake atight engagement with the inner diameter of the turned in body with theadhesive I8 on the inner face thereof contacting with the flange of-thecap and by means of the heating element the adhesive is rendered tackyand an intimate uniting is effected.

It will be here understood in the forming of the cap C, as in Figure 21,that the caps may be so formed in a separate mechanism and deliver thecaps to a magazine or other convenient place instead or into thereceptacle, for application to the receptacle to close the same at anytime after the forming of the receptacle body, and the means for turningin the extended end of the receptacle, as in Figure 22, may be aseparate means, and so turn in the receptacle end, at any time after theforming of the receptacle, and it will be further understood that theturning in of the receptacle end may be omitted and adhesively join thecap flange, flush with the end of the receptacle body. As shown inFigure 23, when this is done, a heating element 39b located in -the head39a, as indicated in Figure 21, is electrically connected to heat thehead and thereby render the adhesive at the end of the body tacky andintimately unite the flanged cap to the body, the heating element notbeing connected when turning in the body, as shown in this view. Theflap b of the blank may be provided with side extensions in the form ofears .9. s. to fold over the From the foregoing, it will be seen, in themethod of forming the receptacle as described 10 to 17 inclusive, theblank is formed on the mandrel to a truncated conical form, the oppositesides overlapp and adhesively united and heated, in which the flller endof the receptacle is the smaller end, the .010-

v and inserted in the larger end of thereceptacle, with the end ofreceptacle turned in, adhesively united and heated,- the receptacle isfilled from the end of smaller diam- .eter, then collapsed to bringopposite walls of the body in close contact with each other, the exsidewall, being the flap, is folded over and adhesiveiy united and heated.In this method, of course, the later closing and sealing ,of' the flapmay be carried out at any forming and filling of the receptacle. 1

8,082,828 In the modified form of the method or forming the receptacle,as in Figures 18 to 22 inclusive, the blank is formed on the mandrel tobe directly formed to bring the opposite side walls in close contact andthe extended portion, being the flap, is turned over and .adhesivelyunited and heated while still on the mandrel and is, in this method ofoperating, the closed end of the receptacle. The receptacle thereafterbeing filled from the opposite or circular open end of. the receptacleafter which the closure cap C is formed inserted and adhesively unitedand heated. In this method as in the former, the

I closure ,cap C may be inserted at any time after the forming andfilling of the receptacle.

The receptacle is rendered grease and oil proof and alcohol and acidresisting after itis formed by coating the inner surface with a cerealgelatine or gluten, in a soluble condition, as by spraying or otherwise.Or to provide a grease or oil proof receptacle, the surface of the blankB and the bottom closure, to constitute the inner sur face of thereceptacle, may be coated with the grease and oil proofing materialprior to the forming of the receptacle, as shown as A in Figures 8 and9.

It has also been found that the grease and oily proofing 'material maybe rendered moisture and water proof by adding formaldehyde.

The receptacle formed from the blank, as shown in Figure 7, with orwithout the coating of the grease and oil proofing material, orconstructed from the blank as shown in Figure 8 with the grease and oilproofing material applied thereto, after the contents have been filledtherein and it is closed andsealed, it is rendered moisture and waterproof by applying a moisture and water proofing material, such asparafline, to the exterior surface thereof, which may be effected by.spraying or dipping into a parafline bath, depending upon the'contentsof the recep-- tacle. I

While the adhesive for securing the component parts of the receptacle,and the material with which theinterior surface of the container iscoated and impregnated, has been defined as particularly adapting papercontainers to. conheat andpressure,jinserting V v in each end of thetube, securing andsealing tain mineral or hydrocarbon oilsand greasga itis also impervious to the action of vegetable oils, such as peanut oilandolive oil, and thatit is also acid'resisting, such as carbonic acidgas, and alcohol resisting, such as alcohol contained in still wines.

Having thus described my invention, I claim:

1. The method of making a paper container which comprises coating ablank and closure on one entire surface with a composition, allowing thecomposition to become dry, forming. the blank into a tube with thecoating inside, and with the edges overlapping, securingsaid overlapping.edgeswith the coating by applicationof a flanged closure them in placewith the samev coating by the application of heat and pressure.

2. The method of making liquid proof containers which comprises coatinga single blank and closure on one entire surface with'a comsition,allowing ecomposition to'b'ecome a p tn dry overlapping, securing'saidoverlapping edges forming the blank into a tube with the coating insideand with the edgesoverlapping,v securing said overlapped edges with thecoating--by-ap-; plication of heat and pressure flatteningone end of thetube, folding an extensionof one side over the other,- and sealing withthe coating a by the application of heat and pressure, inserting aflanged closure in one end of the tube,

securing it in place with the same coating by folding the tube end overing heat and pressure.

3.'The method of making liquid proof paper containers which comprisescoating asingle blank and closure on one entire surface with acomposition, allowing the composition to bethe flange and applycome dry,forming the blank into a tube with the coating inside and withthe edgesoverlapping, securing said overlapped edges with the coating byapplication of heat and pressure, flattening one end of the tube,folding an extension of one side over the other and sealing with thecoating by the application of heat and pressure, inserting a flangedclosure in the other end of the tube, securing it in place with the samecoating by applying heat and pressure.

4. The method of making liquid proof paper receptacles which comprisescoating a single blank and closure on one entire surface with acomposition, allowing the composition to become dry, forming the blankinto a tube with the coating inside and with the edges overlapping,securing said overlapped edges with the coating by application of heatand pressure, flattening one end of the tube, folding an extension ofone side over the'other and sealing with the coating by the applicationof heat and pressure,

' inserting a flanged closure in the other end of the tube, securing itin place with the same coating by folding the tube end over the flangeand applying heat and pressure.

5. The method of making a liquid proof container which comprises coatinga single blank and closure on one entire surface with a composition,allowing the composition to become dry,

forming the blank into a tube with the coating inside and with the edgesoverlapping, securing said overlapping edges with the coating byapplication of heat and pressure, inserting a flanged closure in one endof the tube, securing it in place with the same coating by theapplication of heat and pressure, flattening the opposite end of thetube and sealing with the coating by application of heat and pressure.

6. The method of making a grease oroil proof container which comprisescoating a single blank and closure on one entire surface with acomposition of gelatine and formaldehyde, allowing the composition tobecome dry, forming the blank into a tube with the coating inside andwith .theedges overlapping, securing said overlappingedges with thecoating by application of heat and pressure, inserting a flanged closurein one end of the tube, securing it in place with the same coating byfolding the tube end over the flange and applying heat and pressure,flattening the opposite end of the tube, folding an extension of oneside over the other and sealing with the coating by application of heatand '7; Themethog of making paper receptacles" whichcomprises coatingthemarginal portion of one side and both ends of a single blank with acomposition, allowing the composition to be come. dry, forming the blankintoa tube with the marginal coating inside and with the edges withthecoating by the application of heat and of the tube, securing andsealing them in place fpressure, --inserting a flanged closure in eachend with the marginal coating by the application of heat and pressure.

9. The method of making paper receptacles which comprises coating themarginal portion of one side and one end of a blank with a composition,allowing the composition to become dry, forming the blank into a tubewith the marginal coating inside and with the edges overlapping,

securing said overlapping edges with the coating by the application ofheat and pressure, flattening the coated end of the tube folding anextension of one side over the other and sealing with a the coating bythe application of heat and pres- .sure, inserting a closure in theother end, the

flanged portion of which is coated with the composition, securing it inplace with the coating by folding the tube end over the flange andapplying heat and pressure.

10. The method of making paper receptacles which comprises coating themarginal portion of one side and both ends of a blank with acomposition, allowing the composition to become dry, forming theblank'with a tube with the marginal coating inside and with the edgesoverlapping, securing said overlapping edges with the coating by theapplication of heat and pressure, inserting a flanged closure in one endof the tube, securing it in place with the composition by folding thetube end over the flange and applying heat and pressure, flattening theopposite end of the tube, folding an extension of one side over theother and sealing with the composition by application of heatand-pressure.

11. The method of making a paper receptacle which comprisescoating themarginal portion of one side and both ends of a single blank with acomposition, allowing the composition to become dry, forming the blankinto a tube with the marginal coatinginside and with the edgesoverlapping, moistening the coating with a solvent immediately prior toforming, securing said overlapped edges with the coating by theapplication of heat and pressure, inserting a flanged closure. in eachend of the tube, securing and sealing them in place with the moistenedmarginal coating by the application of heat and pressure.

12. The method of making a liquid proof paper receptacle which comprisescoating 2. single blank on one entire sui'face with'a composition,allowing the composition to become dry, forming the blank into a tubewith the coating inside and with the edges overlapping, moistening thesaid overlapped portions with a solvent, securing said overlapping edgeswith the coating by applicationof heat and pressure, moistening themarginal portion of each end of the tube with a solvent,inserting aflanged closure in each end, securing them in place with the samecoating by the application of heat and pressure.

RAYMOND L. BUSSEY.

